Global Patent Index - EP 1767143 A4

EP 1767143 A4 20090812 - PUPIL DETECTION DEVICE AND IRIS VERIFYING DEVICE

Title (en)

PUPIL DETECTION DEVICE AND IRIS VERIFYING DEVICE

Title (de)

PUPILLENERFASSUNGSVORRICHTUNG UND VORRICHTUNG ZUR IRISVERIFIZIERUNG

Title (fr)

DISPOSITIF DE DÉTECTION DE PUPILLE ET DISPOSITIF DE VÉRIFICATION D'IRIS

Publication

EP 1767143 A4 20090812 (EN)

Application

EP 05743788 A 20050525

Priority

  • JP 2005009510 W 20050525
  • JP 2004206933 A 20040714

Abstract (en)

[origin: US2006262965A1] A pupil detection device includes an image data extraction unit for determining a plurality of concentric circles on an eye image respectively as integrating circles; a contour integrating unit for integrating the image data extracted by the image data extraction unit along the respective circumferences of the integrating circles; a pupil radius detection unit for detecting that the integrated value of the integrating circle has changed stepwise; a pupil position detection unit for detecting that the center coordinates of the integrating circle as pupil position coordinates when the integrated value of the integrating circle is changed stepwise with respect to the radius of the integrating circle, and the image data extraction unit extracts a plurality of image data simultaneously.

IPC 8 full level

A61B 3/10 (2006.01); A61B 5/117 (2016.01); A61B 5/1171 (2016.01)

CPC (source: EP US)

G06V 40/18 (2022.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

US 2006262965 A1 20061123; CN 100444779 C 20081224; CN 1805703 A 20060719; EP 1767143 A1 20070328; EP 1767143 A4 20090812; JP 2006025970 A 20060202; JP 4151624 B2 20080917; WO 2006006307 A1 20060119

DOCDB simple family (application)

US 55547505 A 20051102; CN 200580000546 A 20050525; EP 05743788 A 20050525; JP 2004206933 A 20040714; JP 2005009510 W 20050525